Leyton Orient teenager Ruel Sotiriou scored twice to help condemn League Two’s bottom club Stevenage to defeat at Broadhall Way.
Ousseynou Cisse also found the net to leave Boro four points off safety after their third successive defeat.
Victory saw Ross Embleton’s Orient jump to 18th – 12 points above the drop zone.
Orient goalkeeper Lawrence Vigouroux made a good early save to keep out playmaker Charlie Carter.
Sotiriou, who was on loan at non-league Dover earlier in the season, opened the scoring in the 19th minute when the 19-year-old striker fired across Paul Farman to break the deadlock.
Charlie Lakin came close to levelling as his 25-yard strike was kept out by Vigouroux, and the former Swindon stopper was also equal to Ben Nugent’s header after the restart.
Cisse doubled the advantage just before the hour mark with a poacher’s finish.
Josh Wright’s free-kick looked to be flying in but Cisse made sure to grab his first O’s goal, and three minutes later Sotiriou bagged his second with a fine low effort into the bottom corner.
Match report supplied by PA Media.